This is one of the best 12AX7 for any guitar amp. It is very rich with great harmonics. An excellent tube in all Marshall amps the 3 preamp positions.
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Preamp Vacuum Tube Jj Electronics 12At7 / Ecc81 Preamp Vacuum TubeJj Electronics 12At7 / Ecc81 Preamp Vacuum TubeMusicVirtual Sheet Music Inc
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